Metal window guard attachment



Jan. 3, 1933' D. MODQNALD METAL WINDOW GUARD ATTACHMENT Filed Aug. 17,.1931

- IN V EN TOR.

A TTORNL Patented Jan. 3, 1933 STATES ATENT OFFHCE METAL WINDOW GUARDATTACHMENT Application filed August 17, 1931.

This invention relates to metal guards for windows and especiallyconcerns improvements in the means of fastening the guards to windowframes. At both ends of the cross members of the window guard assemblythere are hooks that enter the frame of the window, and the curved endsof the hooks point towards the inside of the building so as to secure abetter grip if removal by force is attempted. If the guard is torn outthe hooks pull part of the window frame with them and necessarilyresults in a lot of noise. I

do not confine my invention to the hook type of fastener but also usethe T type and the straight type. The T type is for use in installationin new buildings as it must be placed in the frame when the frame is setin the wall. The straight type of fastener may be installed at any time.

I attain these objects by the mechanism illustrated in the accompanyingdrawing in which Fig. 1, represents the outside elevation of a windowwith part of the frame out out to show the inside of the frame. Fig. 2,represents a side elevation of a window frame with sash cord, weightsand hooks on ends of cross members of guard. Fig. 8,

represents a bottom looking upward view of Fig. 1. Fig. 4, represents aplan view of part of a cross member of the guard with straight typefastener attached. Fig. 5, rep resents a plan view of part of a crossmember of the guard with the T type of fastener attaehed.

Similar numerals refer to similar parts throughout the several views.

In Fig. 1, 1 represents the guard comprising the upright bars and twocross members to hold and support the bars; 2 represents the inner endsof the hooks; 8 represents the sash weights; 4 represents the mainupright side members of the window frame; 5 represents the bolts orrivets holding the hook fasteners to the ends of the cross members ofthe guard.

Having identified the parts I now explain how they are used.

Four round holes of sufficient size are bored through the window frameat positions for all hooks 2 2 2 2 to be inserted;

Serial No. 557,499.

then the guard assembly 1 is set in place as shown in Fig. 1; then theflat or fastening ends of the hooks are bolted or riveted to the ends ofthe cross members at 5 5 5 5. If the space for the weights 3 is close itis necessary to push them out of the way to permit the hooks to enter.

As shown in Fig. l of the drawing, the bolts 5 are preferably stovebolts with the heads set in countersunk holes in the cross bars so as tobe flush with the cross bars. After the nuts are screwed down on thebolts the ends are riveted over, and may be split as shown to facilitatethe riveting over process. lVhen thus secured, the bolts may not beremoved by unscrewing the nuts and the guard may only be disassembled bycutting or otherwise destroying the fastenings.

The hooks 2 on the ends of the fasteners prevent lateral displacement ofthe guard in an attempt to work it loose. Also the turning inward of thehooks has the function of preventing their withdrawal by an outward pullon the guard and an angular movement of the hooks with respect to thecross bars. It will be seen by reference to Fig. 3 of the drawing thatsuch an outward pull only serves to engage the hooks 2. more firmly inthe side members of the window frame.

As also shown in Figs. 2 and 3, the guard, when in place, is positioneddirectly beneath the upper window sash so that the upper sash can not belowered to any considerable cXtent, but leaving the lower sash free tobe fully opened and closed. It will be apparent, therefore, that myimproved window guard, when once in place with the bolts 5 riveted over,is effective to prevent the unauthorized entry of thieves and pilferers,except that such destructive force be applied as to attract attention.

When using the straight type fastener 2 in Fig. 4;, they are installedin the same manner. The T type 2" in Fig. 5. is used in the same way butcannot be installed except before the window frame is placed because theT end cannot be entered through a small round hole.

Having described my invention I claim:

1. In a window guard embodying cross 2 p p T 1,893,176

bars, a window frame having holes fermed therein. opposite the ends ofthe cross bars, and fasteners riveted to the ends of the cross bars andextending into the holes.

2. In a Window guard embodying cross bars, a window frame having holesformed therein Opposite the ends of the cross bars,

and fasteners having curved outer ends inserted in the holes andpermanently secured to the ends ofthe cross bars.

3. A window guard as defined in claim 2, in which the outer curved endsare disposed with the curved ends pointing inwardly of the window.

4:. In a window guard for a window having upper and lower sash disposedto be raised and lowered in a frame having side frame members, barsextending crosswise of the window frame and disposed beneath the upperwindow sash, fasteners permanently secured to the ends of the cross barsand extending into the upright side frame members, there being holesprovided in the upright side frame members to receive the fasteners, andcurved ends on the fasteners disposed to point inwardlyof the window.

DAVID MoDONALD.

